Web Server Components

During installation you will make choices about the Web Server components
to be installed. In general, these choices are based on the role the server
will play in a server farm environment and on other administration considerations.
Component choices are made only if you are performing a Custom installation.
For Express installations, default components are installed automatically,
as listed in Table 2–2. Web Server
7.0 includes the following components:

Server Core

Server Core 64–Bit Binaries (Solaris SPARC, AMD64, and Linux only)

Administration Command Line Interface

Sample Applications

Language Pack

Note –

You can install the administration command-line interface without
installing server core, but you cannot install server core without installing
the administration command-line interface.

Server Core

Server core refers to the core binaries required for the Web Server
environment. If Server Core is selected, an Administration instance is created
and it can be configured as either the Administration Server or the Administration
Node, both of which are described below. If the Administration instance is
configured as Administration Server, a default Web Server instance is installed.
These installation options are used in server farm environments in which a
centralized Administration Server resides on one of the nodes and Administration
Nodes reside on the rest.

Administration Server

The Administration Server is a specially configured Web Server instance
used only for administration purposes and on which administration applications
are deployed. Each node in a server farm or cluster environment has an Administration
Server running on it. Of these nodes, one is configured to be the master server,
referred to as the Administration Server, and the rest are configured to be
slave servers, referred to as Administration Nodes (described below). The
Administration Server is used to administer all Web Server instances in a
server farm and to push configurations to the various nodes. The master Administration
Server runs the graphical administration console and command-line administration
interface, while the nodes in the farm run just the Administration Node application.
The Administration Server maintains the configuration repository for all instances.

Administration Node

The Administration Node is a Web Server instance without the features
and functionality of the Administration Server (no graphical console, for
instance). The Administration Node receives commands from the designated Administration
Server and performs limited actions on that particular node, such as creating,
deleting, starting, and stopping Web Server instances. Instances can be created
on Administration Nodes only by the Administration Server. The nodes within
a server farm or cluster cannot be configured independently.

When considering the options described above, use the following general
guidelines:

If you are not setting up a server farm and want just a straightforward
Web Server, choose to configure the Administration instance as the Administration
Server. A default Web Server instance will also be created.

If you are setting up a server farm, first configure the centralized
Administration Server instance. Then configure the rest of the nodes in the
server farm as Administration Nodes by selecting the option to configure the
Administration instance as an Administration Node. If you configure the Administration
instance as the Administration Server, a default Web Server instance is also
created.

Server Core 64–bit Binaries (Solaris SPARC, AMD64, Linux Only)

If this option is selected, the 64–bit binaries required for setting
up the 64–bit runtime for the default Web Server instance are installed.
This option is selected by default and displays only if the system on which
you are installing has 64-bit support. If this option is selected, both 64-
and 32-bit binaries are installed. For more information about 64-bit support
in Web Server 7.0, see 64-bit Support.

Administration Command-Line Interface

If you specify Administration Command-Line Interface in the component
selection portion of the installation, just the command-line administration
interface is installed. This tool is used to administer and configure all
Administration Server and Web Server instances in a server farm remotely from
the command line. For detailed information about the command-line tool and
the powerful new command-line administration interface, see the Web Server
7.0 CLI Man Pages document. For basic information that
will help you get started, also see Using the Administration Command-Line Interface in this document.

Note –

You can install the administration command-line interface without
installing server core, but you cannot install server core without installing
the administration command-line interface.

Language Pack

If you select Language Pack in the component selection portion of the
installation, the language resource bundles containing the localized strings
for the Web Server are installed. Sun Java System Web Server 7.0 supports languages such as Japanese,
Korean, Spanish, French, German, Traditional Chinese, and simplified Chinese.
Core message that are part of ServerCore is available in the supported locale
language. For example, to see the Admin Console in Japanese, change to the
browser locale to Japanese.